On the Origin of the Color Shift in White-Emitting OLEDs

Malte Christian Gather; Ronald Alle; Heinrich Becker; Klaus Meerholz

doi:10.1002/adma.200701673

On the Origin of the Color Shift in White-Emitting OLEDs

Malte Christian Gather, Ronald Alle, Heinrich Becker, Klaus Meerholz

Research output: Contribution to journal › Article › peer-review

Abstract

White-emitting organic light-emitting diodes (OLEDs) notoriously suffer from brightness-dependent color shifts. Based on experimental data and fundamental considerations about charge-transport and trapping, a quantitative model is developed which gives insight into the origin of this shift and describes the experimental data extremely well. Having understood the major contribution to the spectral instability, a device architecture is designed that shows excellent color stability over a wide range of brightness levels.

Original language	English
Pages (from-to)	4460–4465
Number of pages	5
Journal	Advanced Materials
Volume	19
Issue number	24
DOIs	https://doi.org/10.1002/adma.200701673
Publication status	Published - 28 Nov 2007

Keywords

Charge transport
Light-emitting diodes
White-light emitters

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10.1002/adma.200701673

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title = "On the Origin of the Color Shift in White-Emitting OLEDs",

abstract = "White-emitting organic light-emitting diodes (OLEDs) notoriously suffer from brightness-dependent color shifts. Based on experimental data and fundamental considerations about charge-transport and trapping, a quantitative model is developed which gives insight into the origin of this shift and describes the experimental data extremely well. Having understood the major contribution to the spectral instability, a device architecture is designed that shows excellent color stability over a wide range of brightness levels.",

keywords = "Charge transport, Light-emitting diodes, White-light emitters",

author = "Gather, {Malte Christian} and Ronald Alle and Heinrich Becker and Klaus Meerholz",

note = "The authors thank M. Fl{\"a}mmich (Fraunhofer IOF, Jena) for the optical characterization of the white-emitting polymer and Dr. D. Hertel for support with the temperature-resolved measurements. The authors also thank Dr. A. Ludemann for the synthesis of the polymers and Dr. S. Heun (both Merck KGaA) for useful discussion. The authors acknowledge financial support from the Bundesministerium f{\"u}r Bildung und Forschung (BMBF) through the Hobbit project (13N8952).",

year = "2007",

month = nov,

day = "28",

doi = "10.1002/adma.200701673",

language = "English",

volume = "19",

pages = "4460–4465",

journal = "Advanced Materials",

issn = "1521-4095",

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TY - JOUR

T1 - On the Origin of the Color Shift in White-Emitting OLEDs

AU - Gather, Malte Christian

AU - Alle, Ronald

AU - Becker, Heinrich

AU - Meerholz, Klaus

N1 - The authors thank M. Flämmich (Fraunhofer IOF, Jena) for the optical characterization of the white-emitting polymer and Dr. D. Hertel for support with the temperature-resolved measurements. The authors also thank Dr. A. Ludemann for the synthesis of the polymers and Dr. S. Heun (both Merck KGaA) for useful discussion. The authors acknowledge financial support from the Bundesministerium für Bildung und Forschung (BMBF) through the Hobbit project (13N8952).

PY - 2007/11/28

Y1 - 2007/11/28

N2 - White-emitting organic light-emitting diodes (OLEDs) notoriously suffer from brightness-dependent color shifts. Based on experimental data and fundamental considerations about charge-transport and trapping, a quantitative model is developed which gives insight into the origin of this shift and describes the experimental data extremely well. Having understood the major contribution to the spectral instability, a device architecture is designed that shows excellent color stability over a wide range of brightness levels.

AB - White-emitting organic light-emitting diodes (OLEDs) notoriously suffer from brightness-dependent color shifts. Based on experimental data and fundamental considerations about charge-transport and trapping, a quantitative model is developed which gives insight into the origin of this shift and describes the experimental data extremely well. Having understood the major contribution to the spectral instability, a device architecture is designed that shows excellent color stability over a wide range of brightness levels.

KW - Charge transport

KW - Light-emitting diodes

KW - White-light emitters

U2 - 10.1002/adma.200701673

DO - 10.1002/adma.200701673

M3 - Article

SN - 1521-4095

VL - 19

SP - 4460

EP - 4465

JO - Advanced Materials

JF - Advanced Materials

IS - 24

ER -

On the Origin of the Color Shift in White-Emitting OLEDs

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Keywords

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